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van der Waals attraction

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van der Waals attraction [′van dər ‚wȯlz ə‚trak·shən]
(physical chemistry)


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Unfortunately, GNPs are easy to agglomerate due to strong interplatelet van der Waals attractions and high surface energy, and hard to disperse in the composite.
It is remarkable that in the fracture surface and behind it, the particles remained in contact during and after freeze-fracture: that is undeniable evidence of van der Waals attraction force and perhaps additional surface forces holding them together, because there is no sign of their being welded by coalescence.
Dorbolo and Vandewalle say they've conducted recent experiments that suggest that the antibubbles oppose van der Waals attractions with some counterforce, perhaps electrostatic repulsion, between detergent molecules that protrude into the air gap from the liquid on either side.
 
 
 
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